05386+3030 BU 1240 AB

 
 
05h 38m 38.10s +30° 29' 32.8" P.A. 324.00 sep 0.2 mag 6.29,6.21 Sp G8III+A1 dist. 173.61 pc (566.32 l.y.)
 
 
Coord 2000 05386+3030 Discov num BU 1240 Comp AB Coord arcsec 2000 05 38 38.10 +30 29 32.8
Date first 1892 Date last 2012 Obs 102
Pa first 344 Pa last 323.7 P.A. Now (θ) 295.8°
Sep first 0.2 Sep last 0.188 Sep. Now (ρ) 0.109"
Mag pri 6.29 Mag sec 6.21 delta mag (ΔM) 0.08 Spectral class G8III+A1 (yellow/white)
Pri motion ra -021 Sec motion ra -021
Pri motion dec -012 Sec motion dec -012
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
05386+3030 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 58280 05 38 38 +30 29 33 BU 1240 AB 2012 102 324 0.2 6.29 6.21 0.08 Y <===
Show 26 Aur 58280 05 38 38 +30 29 33 STF 753 AB,C 2019 71 269 12.4 5.46 8.41 2.95
Show 58280 05 38 38 +30 29 33 BU 90 AB,D 2015 22 113 35.4 5.46 11.50 6.04
Quadruple system
5 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name NSV2485 Aur Constellation Auriga SAO 58280 HIP 26536
Tycho2 2404-01350-1 Gaia DR2 3447545341986921216 HD 37269 HR 1914
GC 7002 ADS 4229 BD BD+30 963 Flamsteed 26 Aurigae
Flamsteed name 26 Aur Distance 173.61 Distance ly 566.32
 
 
ORBITAL ELEMENTS
 
 
Period (P)52.735y± 0.156 Periastron (T)1974.927y± 0.026 Semi-major axis (a)0.154a± 0.001
Eccentricity (e)0.653± 0.002 Inclination (i)124.22°± 0.29 Longitude of periastron (ω)309.07°± 0.14
Node (Ω)127.08°± 0.38 Notesn ReferenceFMR2008
Equinox2000 Last observation2004 Grade2(1=Definitive, 9=Indet.)
label theta rho
2000 344.2 0.190
2001 342.3 0.194
2002 340.5 0.198
2003 338.8 0.201
2004 337.1 0.203
2005 335.5 0.206
2006 333.8 0.207
2007 332.3 0.209
2008 330.7 0.209
2009 329.1 0.209
2010 327.5 0.209
2011 325.9 0.207
2012 324.3 0.205
2013 322.6 0.202
2014 320.9 0.199
2015 319.1 0.194
2016 317.2 0.188
2017 315.2 0.182
2018 313.1 0.174
2019 310.6 0.164
2020 307.9 0.153
2021 304.7 0.141
2022 300.9 0.126
2023 295.8 0.109
2024 288.7 0.089
2025 277.0 0.066
2026 252.5 0.043
2027 197.2 0.033
2028 149.7 0.047
2029 126.8 0.063
2030 111.7 0.072


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.


 
  


wds05386%2B3030a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 05386+3030 BU 1240 AB : NOTES
 
 
discov_num notes refcode
BU 1240 26 Aur. Composite spectrum; B9.5V+F9III. Light variability suspected.
See Baize & Petit (1989) catalog of doubles with variable component. Baz1989d
Only elements P and T have been amended by Starikova (1977) from the Sta1977a
orbit of Baize (1956). Baz1956
Romero (2008) estimates masses of the A and B components as 2.1 +/- FMR2008
1.0 and 3.0 +/- 0.4 Msun, respectively; spectral types are G8III and
A1IV or B9.5V.
AB: Malkov et al. (2012) derive dynamical, photometric, and
spectroscopic masses 6.87 +/- 22.98, 5.45, and 4.82 Msun, respectively. Mlk2012
STF 753 Romero (2008) analyzes the optical/physical nature of the C component; FMR2008
the spectral is determined to be about A6V and it appears to be
gravitationally bound to the AB pair, with an estimated orbital period
of ~46,000 years.
AB,C: H 3 64. MEv2010
BU 90 Romero (2008) derives a proper motion for D (+0.4 +/- 2.1 mas/yr in FMR2008
RA, -12.6 +/- 1.6 mas/yr in Dec) based on that of the AB pair plus the
relative motion of AB,D between the years 1856 and 2002. He also
concludes that D is optical, with a spectral type estimated at K1III
and distance of ~870pc (both determinations corrected for reddening).
 
 
REFERENCES
 
 
refcode metd author reference
Baz1956 orb - Baize, P. 1956JO.....39...82B
Baz1956 J. Obs. 39, 82-91, 1956
Baz1989d - Baize, P. & Petit, M. 1989A&AS...77..497B
Baz1989d A&AS 77, 497, 1989
FMR2008 orb - Rica Romero, F.M. 2008RMxAA..44..137R
FMR2008 RevMexA&A 44, 137, 2008
MEv2010 - MacEvoy, B. ...................
MEv2010 private communication, 2010 (see http://www.handprint.com/ASTRO/index.html)
Mlk2012 not - Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. 2012A&A...546A..69M
Mlk2012 A&A 546, A69, 2012
Sta1977a orb - Starikova, G.A. 1977ATsir.961....7S
Sta1977a Astron. Tsirk. #961, 7, 1977
 
 
DISCOVERER
 
 
idgroup discov author
1 BU Burnham, S.W. (BU 1 - 81)
179 STF Struve, F.G.W.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
05386+3030 BU 1240 AB 2005 95 334 0.2 6.29 6.21 G8III A1 NOD 053838.10+302932.8
05386+3030 BU 1240 AB 2008 98 329 0.2 6.29 6.21 G8III A1 NOD 053838.10+302932.8
05386+3030 BU 1240 AB 2009 100 323 0.2 6.29 6.21 G8III A1 NOD 053838.10+302932.8
05386+3030 BU 1240 AB 2010 101 327 0.2 6.29 6.21 G8III A1 NOD 053838.10+302932.8
05386+3030 BU 1240 AB 2012 102 324 0.2 6.29 6.21 G8III+A1 NO 053838.10+302932.8

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WDS 05386+3030 BU 1240 AB : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 05386+3030 BU 1240 AB : MEASURES
 
 
No records found.

 
 
WDS 05386+3030 : VIRTUAL EYEPIECE
 
 

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WDS 05386+3030 : ALADIN DSS IMAGE @
 
 
Error -22130
Not valid ID.
Error -22130
Not valid ID.
Error -27220
Not valid ID.